Glass forming machine



May 25, 1937.

T. C. MOORSHEAD GLASS FORMING MACHINE Filed NOV. 28, 1936 7 Sheets-Sheet l 4, fwwm #12217 if"; B) fl w r 7 firme/vo s May 25, 1937. 'r. c. MOORSHEAD GLASS FORMING MACHINE Filed Nov. 28, 193s" 7 Sheets-Sheet 2 m 7 M 4 V w May-.25, 1937. T. c. MOORSHEAD 12,031,895

. GLASS FORMING MACHINE FiledNov. 28, 1956 7 Sheets-Sheet'S 5y t f m Y' 1937. T. c. MOORSHEAD GLASS FORMING MACHINE Filed Nov. 28, 1936 7 Sheets-Sheet 4 WVI/W-o/e' lar mxviys MN m s uw y 3 T. c. MOORSHEAD 7 2,081,895

GLASS FORMING-MACHINE Filed Nov. 28. 1956 7 Sheets-Sheet 5 my. a

y 1937. T. c. Mo oRsHEAD I 2,081,895

GLASS FORMING MACHINE Filed Nov. 28, 1936 v 7 Sheets-Sheet 6 4717M HTTOKNEYS y 1937- T. c. MOORSHEAD 2,081,895

' GLASS FORMING MACHINE Filed Nov. 28, 1936 7 Sheets-Sheet 7 11AM awn- 977M I actress mass to.

Thomas Courtney Moorshe, Strand, London, England, sssignor to Bali Erothcrs Gompany,

Muncie, lind.

Application Novem 28, 1936, Serial No. 113,165 I In Great Britain eptemher it, 1935.

17 Claims.

This invention relates to glass forming or shaping machines and particularly to rotary machines suitable for use in the formation of hollow glass ware, for example, machines op crating on the press and blow system.

In U. S. Letters Patent 1,807,857 issued. to me on June 2, 1931, there is described and claimed aglass shaping machine of the press and blow type employing blank and finishing molds and in which the blank molds are filled while moving in an upright position underneath a flow feeder which is adapted to deliver a definite charge of glass into the upper open end of each mold asit passes the feeding position. The blank molds are arranged for movement in two circular or arcuate paths so that at times they are adapted to move in an outer circle or arcuate path where each receives a charge of glass and at other times they are adapted to move in an inner circle or arcuate path in order to co-operate with neck molds.

The chief object of the present invention is to provide an improved form of rotary type machine wherein the molds, instead of being filled 25 from a flow feeder are adapted to gather their charges from a. forehearth or revolving pot dur ing the continuous rotation of the machine. According to one feature of the invention there is provided an improved form of glass 3) shaping machine comprising a plurality of molds mounted for movement around a central column so that at times the molds are moving in an outer arcuate path and at others they are moving in an inner arcuate path, means for swing- 5 ing the molds from one path to the other and means whereby the molds whilst traversing the outer arcnate path are adapted to be pressed downwardly into a forehearth or revolving pot and filled by suction.

In order that the said invention may be clearly understood and readily carried into e'iiect, the same will now be more fully described withrefercnce to the accompanying drawihgs in which:-

Figs. 1 and 1a are vertical sectional views of one-half of a machine embodying the invention showing a blank mold swung into its gathering position, such section being taken on the lin". AA of Fig. 3;

Figs. 2 and 2a are vertical sectional views oi one-half of the machine shown in Fig. 1 showing a blank mold swung under a register head and ready for the pressing operation, such section being taken onthe line 3-3 of Fig. 3;

Fig. 3 is a sectional plan view showing diiierent showing the pressing plunger; and

(or. to -5i sector sections at different levels, the sector C being taken on the line 0-0 of Fig. 2 showing the blank mold in an outer position and the sector D being taken on the line D-D of Fig. 1 showing the blank mold in an inner position;

Fig. 4 is a sectional plan view taken on the line EE of Fig. 2, with the blank mold ann'swung out and showing the register head;

Fig. 5 is a sectional plan view taken on the line F-F of Fig. 2 with the blank mold arm swung'out and-the suction head lowered and Fig. 6 is a front elevation along of Fig. 3. I

The machineillustrated in the accompanying drawings is similar in many respects to that described andillustrated in said Letters Patent No. 1,807,857, particularly as regards the register the line G-G heads, the neck molds and the pressing plungers and the finishing molds, and comprises a hollow stationary central column made up of a lower portion 2 and an upper portion 3. Rotatably mounted on. the column is a rotary frame d provided with a'toothed ring i adapted to be driven from any suitable external source of power. The lower portion of the column is equipped with a fixed inclined track it, serving, in known manner, for controlling the movements of the finishing or blowing molds it each oi which is provided with a carrier l2 pivoted at it to the rotary frame d. Each carrier is provided with a roller it which travels on the surface of the track it and according to their positions on the traclr the molds i i are raised or lowered.

The upper portion of the stationary column is provided with a plurality of cam tracks which serve to control the operations of various ele ments of the machine as the rotary frame turns therearcund. One cam track, forexample, the cam track; to, serves to swing the blank molds from one arcuate path to the other so as to move the same from their gathering to their pressing positions and vice versa. In this connection, it will be observed that the machine is provided with a series (e. g. eight) of blank molds each carried by one of a series of hori zontaliy displacea'ole blank mold arms to pivotally mounted on the rotary frame at it. The contour or form ofthe arms in plan can be seen from Figs. 3 and 4 and they are mounted 'so'as J to be capable of being swung on pins 2i (see Fig. l).

The means for swinging the blank mold arms positions comprise a cam roll la engaging the cam track an, said cam roll being carried by. a radial cam slide 5a accommodated in guides on the rotary frame and interconnected through a spring pressed rod 6 (see Fig. 4) with a toothed rack 6a which meshes with a'toothed sector la suitably secured as, for example, by a bolt or pin lb with the inner end of the blank mold arm 20. It will be appreciated that the cam track 3:; is shaped so that it is adapted to cause each of the molds, in turn, to be swung at the appropriate times, from one of its operative positions to the other and back again once every revolution of the rotary frame.

Suitable means are also provided for severing the charges of glass gathered by the molds from the mass of glass in the forehearth or revolving associated and means are provided for loading a spring during the outward movement of the blank mold arm -'so that, by the subsequent release of the spring,'the cut-off knife can, at the appropriate time, beurged across the lower end of the charged blank mold. For example, in the embodiment illustrated, the lower end of the shaft l5 has keyed to it a knife arm I 6 and the upper end of the shaft; [5 has keyed to it a toothed sector Ma (see Figs. 2 and 3) which meshes with another toothed sector [3a arranged for movement about a centre I31) and formed at its opposite end with another toothed portion meshing with a toothed sector 9 mounted for movement about the centre 2|, the last-mentioned sector being provided with a sleeve 9a (Fig. 6) having an arm 9b projecting therefromwhich is connected to a rod I having a cam roll Ila engaging with the periphery of a stationary cam plate l2a (Fig. 3) carried by the central column. Also, a spring I1 is provided having one end thereof held on a gudgeon pin I8 carried by the blank mold arm 20 whilst the other end thereof is constrained against another gudgeon pin l9 carried by the sector 9, the arrangement being such that the spring is adapted to be compressed by'an outward swing of the blank mold arm into the position shown in Fig. 3. The said spring is carried in known manner by a rod 160. provided with an adjustable stop nut 11a and also serves to hold the cam roll Ha hard against the cam 12a. Means are also preferably provided for enabling. the height of the cut-off knife to be adjusted to suit molds of varying heights. For example, the vertical shaft l may be threaded through a handwheel 28a mounted on a driving sleeve 2m keyed to the aforesaid sector Ma.

From the foregoing it will be appreciated that, when a blankmold arm is swung outwardly from a position such as that indicated in sector D, Fig. 3 into a position-such as that indicated in sector C, the sectors 9, l3aand Ila will be brought into operation to cause the compression of the spring l1.

Each blank mold comprises two half-molds 2?. provided with vacuum grooves 22a, the two halves of the mold being adjustably mounted in position on a pair of scissor arms 32 pivotally mounted at 32a on the blank mold arm 20. Suitable means are provided for effecting the opening and closing movements of the mold parts and, in the embodiment illustrated, such means comprise a cam roll 24 engaging a cam track 23 provided on one of the fixed cam plates carried by the central column 3, said cam roll being carried by a radially disposed cam slide 25 connected by a connecting rod 28 with one arm of a bell crank lever 21 pivoted at 2111 on a radial extension of the rotary frame of the machine (see Figs. 1 and 3) and the other arm of the bell crank lever being connected by a link 28 with a member 28a arranged for movement in a toggle slide 30 against the action of a toggle spring 29. The toggle slide also accommodates a link or bar 30a and an equalizer slide 31a constrained against lateral movement and interconnected with a pair of toggle levers or links. 3| pivotally connected with the scissor arms of the mold parts, the arrangement being. such that,

when the cam roll 24 is displaced outwardly from the centre of the machine, the bell-crank lever 21 will be actuated to open the mold and, when the cam roll is moved in the opposite direction, the bell crank lever will be actuated to compress the toggle spring 29 and to press the two mold parts together; In the preferred embodiment of the invention, the cam track 23 is so shaped and arranged that each blank mold is closed either before or during its movement into an outer position such as is shown by Fig. 3.

The machine also includes a plurality of suction heads 33, one for each blank mold, said suction heads being carried by outwardly extending brackets 4| mounted in position on the rotary frame of the machine so that the heads move always in a circular path disposed verti-,

cally above the outer arcuate path of the blank molds. Means are provided for raising and lowering .the suction heads and, in the embodiment illustrated, the said means comprise a cam roll 35 a stationary cam track 34 formed on one of the cam plates carried by the central column 3 (see Figs. 1 and 6), the said. cam roll being carried by a radially displaceable cam slide 36interconnected by means of 'a connecting rod 31 with a toothed rack 38 meshing with a toothed sector 39 which is displaceable angularly about a horizontally disposed axis 39a and is keyed or otherwise secured to another toothed sector 40. The latter meshes with a toothed rack 40a formed upon or secured to one side of the suction head which, it will be observed, is hollowand extends upwardly through the bracket 4| so as to be capable of being moved vertically therein. At its lower end the suction head is formed with a spigot 33a which, when the suction head is lowered, is adapted to register with a recess formed for its reception in the upper end of the blank mold as may be seen from Fig. 1. At its upper end the suction head is connected through an elbow joint with theouter end of a radially disposed vacuum pipe 42' the inner end of which is ctmnected through another elbow joint to allow for the up and down movements of the suction head with a rotary distributor 64 which is mounted in position on the upper portion of the central column 3 and which is maintained in communication with a suitable source of vacuum through the medium of the vacuum chamber 65 which the suction head is adapted to be lowered is in excess of that which is necessary to. bring its spigot into registration with the recess in the upper part of the blank mold so that the suction head after being pressed'into contact with the blank mold is caused to continue its downward movement and to carry with it, the blank mold so that the latter is caused to dip into the mass, of glass in the forehearth or revolving pot. For this purpose, the blank mold scissor arms are carried by a sleeve 88 which is mounted on the pivot 32a of the mold parts so as to be capable of longitudinal and vertical displacement and yoked around the upper bearing 32b of the sleeve is a yoke lever ll which is pivotally mounted at tie and the opposite end of which is coupled with a gudgeon pin 88 '(Figs. 3 and 6) interconnected with the upper end of a rod its carrying a spring is, the arrangement being such that,

by a downward movement of the bearing 3212, a

nut and washer 65 provided on the lower end of the rod Alta will cause the spring as to be compressed in its housing dd. Hence, by the continued downward movement of the suction head, the blank mold can be forced to dip into the glass in opposition to the force exerted by the spring 43.

Within the hollow stem of the suction head and near the lower end thereof is a vacuum valve of the column 3. The cam plate is so shaped and arranged that, alter the suction head and the blank mold have been lowered and the lower end of the latter has been caused to dip into the mass of glass in the forehearth or revolving pot,

the cam roll 54 will be actuated to displace the valve rod 50 downwardly to open the vacuum valve 49.. Beneath the vacuum valve is arranged a spring 56 the lower end oi which is adapted to oo-operate with a plunger tip dl-in such a manner that the opening of the vacuum valve causes the spring 56 to be compressed and to force the plunger tip tightly into contact with the top of the blank mold thereby sealing the opening in the upper end of the blank mold I against the upward flow of glass which takes place by virtue of the vacuum produced in the mold.

After the opening of the vacuum valve and the "consequent filling of the mold with glass. the

suction head 33 is lifted by action of the cam 35. cam roll 35, connectingjrod 3i, rack 38, sectors 39 and 40 and rack 40a the amount of the lift being suflcient to permit the blank mold to be raised by the action of the spring it to the cutoff knife level. The cut-0K is timed to take place almost immediately after such love] is reached and as soon as the blank mold has arrived in a suitable position over the forehearth or'revolving pot. The cut-oil of the hanging-glass ,3 brought aboutby the action of the'cam I211 in releasing the spring:v ll (seeF'ig. 3) so that the sectors 8, Ba. and a, the shaft l5 and the knife arrangement being such that the knife is brought to rest with a circular recess deformed in the upper surface of the knife disposed beneath tion oi the nut lie on itsirod ltd. Upon registratlon of the recess 30. with the lower'end of the blank mold, the parison will fell slightly to fill the recess. The suction head is then lifted clear of the upper end of the blank mold by the continued action of the cam il i, cam roll 3%, rack 88, sectors 39 anddd and rack lda and, at the same time, the vacuum valve at is caused to close under the action of the cam dd.

At this stage, the blank mold is ready to be swung inwardly so as to return the same to its inner arcuate path and this is brought about through the medium of the cam track to, cam roll to, cam slide to, the toothed rack to and the toothed sectorlrr which is secured to the blank mold arm 28, the charged blank mold being brought to rest in a position beneath a register head 65 at which position the pressing operation is to take place. At a point substantially midway between the outer and inner positions of the blsnir mold, the underside of the cut-ofi knife by which the lower end of the parison is being supported, is caused to slide over an upstanding sup-' mrt screw 59 (see Figs. 1, 2, 3, 4 and 8) threaded into a pressing support arm as mounted for an-' gular movement in a horizontal plane about the same axis as that around which the blank mold arm 2% is arranged to be moved, viz. the axis 26. Also, when the screw 58 is located centrally under the knife and the blank mold, a downwardly extending pin 86 provided for the purpose on the blank mold arm is caused to engage a stop screw 88 mounted in position on the arm 33 so that the latter is moved along with the blank mold arm'into a position beneath the register head 5%.

The register head and the neck mold arm 82 may then be lowered in a manner similar to that dropped into position and a pressing plunger 53 (Fig. 2) may be lowered through the neck mold and into the blank mold so as to press the glass upwardly into the former whilst at the same time forming a cavity in the upper end of the parlsonf- The means for raising and lowering the pressing plunger may be similar to those described in U. S.

Patent No. 1,807,857 or a suitable modification thereof and are also adapted to be brought into operation by a cam track formed in or on a cam plate carried by the central column of the ma-. chine.

The further operations necessary to complete the formation of the were follow the lines of" thoseusually adopted in a machine oil the type with which the present invention is concerned and, as they are described fully in U. 8. Patent No. 1,807,357 already referred to, it is unneces-'- sary to describe these again in detail. In order, however, to make the operation of the machine as a whole clear, there is set out below the sequence of operations performed in the making of one piece oi ware, it being understood that the cycle of operations is repeated a number or times during one complete revolution of the machine,

,lever 21 and toggle links 3|.

from the centre of the machine by the action of the cam roll 4a in its cam track 311 and by the cooperative actions of the rack 6a and sector la. In this manner, the mold is brought into position over the forehearth or revolving pot indicated at 8| in Figs. 1 and 5. Also, during and by such outward swinging movement, the cut-01f knife 8 is brought into a position-ready for cutting and the cut-off knife spring I! is compressed as shown in Fig. 3, this being brought about by the action of the cam l2a, cam roll Ila and co-operating parts including the sectors 9, I311, and Na. Either before or during the outward swinging movement above referred to, the two halves of the blank mold are closed and pressed together by the action of the cam track 23, cam roll 24 and co-operating parts including the bell-crank The suction head 33 and the plunger tip 51 are then caused to descend by the operation of the cam roll 35 in its cam track 34 to bring the spigot 330,,into registration with the recess formed in the upper end of the blank mold and, by the continued downward movement of the suction head, the lower end of the blank mold is pressed into themass of glass in the forehearth or revolving pot' in opposition to the force exerted by the spring 43 which becomes compressed. The vacuum valve 49 is then lowered and opened by the conjoint operation of the cam plate 55 and cam roll. 54

and the blank mold becomes in consequence, filled with molten glass whereupon, owing to the shaping of the cam track 34, the blank mold and the suction head are raised'clear of the glass, by the release of the spring 43, to the cut-off level. The cam roll 'i la then moves inwardly on the cam l2a with the result that the cut-off knife 8 is swung across the lower end of the blank mold by the action or release of the compressed spring I1. and is brought to rest with its recess 8a registering with the opening in the'lower end of the blank mold. In the meantime, the suction head 33 is lifted by the action of the cam roll 35 clear of the upper end of the blank mold and the glass in the latter settles in the recess in the cut-off knife.

The blank mold arm 2|! is now swung inwardly to bring the mold into its inner arcuate path by the action of the cam roll 4a and, during this movement, the cut-off knife 8 is moved with the blank mold so that it remains in contact with the lower end thereof. At approximately midway between the inner and outer positions of the mold, the pin engages the stop screw 6| on the pressing support arm 60 with the result that the latter is also swung inwardly along with the blank mold and thecut-off knife to bring the outer end thereof into position beneath the register head 58 and pressing plunger 63. The register head is then lowered to bring the same into registration with the blank mold and immediately thereafter the pressing plunger is lowered into the blank mold whilst the lower end of the parison is supported, thereby forcing the glass up. into the neck mold. The pressing plunger isthen raised clear of the register head and the latter lifted slightly after which the blank mold is opened by the action of the cam roll 24 and toggle links 3|. The-register head is then raised further vto lift the pressed parison clear of the lowering and .mold is traveling in the outer arcuate path,

recess in the cut-off knife and of the upper surface of the latter whereupon the cam roll 4a. is brought into operation again to swingthe blank mold outwardly ready for recharging. At this stage, a downwardly extending pin carried by the blank mold arm is brought into engagement with a stop screw 64 on the pressure support arm 30 in order to swing the latter out from under the parison into the position shown in. Fig. 4 clear of both the finishing mold and the revolving 'pot. The finishing mold II is now raised and closed around the parison, in known manner, suspended from the neck mold whereupon the blow slide 66 is moved into position and the blowing effected.

Having thus described my said invention, what I claim as new therein and desire to secureby Letters Patent is:-

1. A glass shaping machine comprising a central column, a plurality of molds mounted for movement around said column, means controlled by the rotation of said molds for swinging the same in a horizontal plane, whereby the molds travel at one time in an outer path and at another time in an inner path, means for pressing the molds traveling in said outer path downwardly into a forehearth, means for connecting the interior of the-depressed molds to a source of suction, a cut-off knife mounted for angular movement across the lower end of the mold, a spring associated with said knife, means con- 2. A glass, shaping machine comprising arotatable frame, a series of arms pivoted to said frame, a plurality of neck molds carried by said frame and-arranged to travel continuously in an inner circular path, a blank mold supported by each said arm, means for swinging said blank mold supporting arms about their pivots so that at times the molds are moving in an outer circular path and at other times in a circular path beneath said neck molds, means for pressing the molds traveling in the outer path downwardly into a iorehearth and connecting the interiors thereof to a source of suction to draw a charge of glass therein, including a plurality of suc- .path of said molds, means for moving said suetion heads into and out of engagement with said molds, and means for pressing the charge of glass in theblank molds while such molds are traveling in the path of said neck molds.

3. A glass shaping machine comprising a frame, a plurality of blank molds pivoted to said frame and movable about their pivots so that at times the molds are moving in an outer arcuate path and at others they are moving in an inner arcuate path, means for swinging the molds-from one path to the other, means for filling each sa'id'mold while such means for raising each filled mold, a spring actuated severing implement associated with each mold, and means associated with said mold swinging means for placing the spring of each said implement under compression as said molds are swung to their outer path and means for releasing said spring as said mold is raised to move said severing implement underneath its respective mold, and for positioning it thereunder, said trolled by the outward swinging movement of the y mold for compressing said spring, and means end of the mold.

spouses severlngimplement being formed with a recess adapted to register with the opening in the lower i. A glass shaping machine comprising a frame, a plurality of blank molds pivoted to said frame, aplurality oi neck ring molds one for eech blank mold carried by saidframe and movable in a circular path, a plurality of suction heads one for each blank mold carried by said frame and adapted to travel in a path concentric to but surroundingthe path of travel of said neck ring molds, means ior swinging each said blank mold about its pivot so that at times each blank rnold is moving in a path underneath a suction head and at others it is moving in a path underneath a neck ring mold, means for moving each said suction head into and out of engagement with the blank mold traveling therebeneath to dip the mold into a iorehearth and gather a charge of molten glass therein, means responsive to the movement of 2. charged mold into. association with a neck ring mold for positioning a supporting member thereunder, and means for pressing the charge in said mold while associated with such neck ring mold.

5. A glass shaping machine as claimed in claim 4'ln which the support member comprises an arm mounted for angular movement in a horizontal plane and which is adapted to be engaged and moved on the swinging movement of the mold so that it moves along with the mold into a. position beneath the pressing means,

6. In a. machine for forming hollow glass articles, the combination of a neck ring mold, a

suction head spaced from said neck ring mold, an open ended blank mold mounted for movement between said neck ring mold and said suction head, means for swinging said blank mold between said neck ring mold and said suction head,

means for moving said suction head into and'out of engagement with the blank mold positioned thereunder to press the mold downwardly into a bath of molten glass and fill said mold, means for raising said blank mold as said suction head is moved out of engagement therewith, and means for severing the glass stringing from said blank mold, including a shear blade, ands. spring for actuating said blade, and means responsive.-

' for moving said suction head into and out of engagement with the blank mold positioned thereunder to press the mold downwardly into a path of molten glass and draws charge into said mold, means for raising said blank mold as said suction head is moved out a: engagement therewith, and means associated with said blank mold for severing the glass stringing from said mold, including a shear blade, a spring for actuating said shear blade, means responsive to the movement or said mold to a position underneath said suction head for compressing said spring, and means for r said compressed spring to actuate said shear blade.

8. In a machine for forming hollow glass ortlcles, the combination comprising a blank mold,

means for moving said bl mold betw n a charging position and a p t a, tlon,

cooperating with said blank mold at the charging position for lowering said mold into a bath of moltenlglass and drawing a charge'thereinto, a knife for severing the glass stringing from said mold and for closing the lower end thereof, a; neck ring adapted to register with said blank mold at the pressing position, means at the pressing position for pressing the charge in sold mold, and auxiliary means for supporting said blank mold during the pressing operation, including a horizontally swinging supporting arm adapted to be engaged by and carried with said mold as it moves from the charging position to the pressing positlon.

9. In. a machine for forming hollow glass articles, the combination of a, rotatable frame, a series of suction heads carried by said frame, and a series of neck ring molds carried by said frame and adapted to travel in a path concentric to the path of travel or said suction heads, a series of open ended blank molds, laterally swinging arms connecting said blank molds to said frame, means for swinging said arms so that the blank molds ill travel for a portion of each revolution in a path underneath said suction heads and for the remainder oi each revolution in a path in registration with the neckring molds, means for moving said suction heads into engagement with the molds traveling thereunder tic/press said molds downwardly into a bath or molten glass and draw a charge thereinto, means for raising each filled blank mold when said suction head is withdrawn therefrom, meansfor severing the glass stringing from said blank molds and for closing the bottom thereof, blank supporting means adapted to be engaged by said blank molds and carried therewith to a position underneath said neck ring molds, and means projecting through said neck ring mold for pressing the were in said blank mold. 1

10. In a machine for forming hollow glass articles, the combination comprising a plurality of rotating blank molds, means for swinging said molds from a charging position to a. pressing station, means adapted to cooperate with said molds at the charging position for drawing a charge of molten glass thereinto, means responsive to the swinging movement of said molds for severing the glass stringing from each said mold and forsupporting the charge therein, a plurality of rotating neck ring molds, one for each blank mold, adapted to move into registration with said blank molds at the pressing station, a blank mold supporting member, means responsive to the movement of a charged blank moldto the pressing station for blank mold, and means at the pressing station for pressing the charges in the molds and for filling said neck ring molds. v

11. In a machine for forming hollow glass articles, the combination of a series of rotating moving said supporting member underneath-said blank molds, a suction head for each blank mold adapted to be moved into and out of engagement with its respective blank mold, a valve in said suction head, means for periodically operating said valve to connect the interior of each suction head to a source of suction, and means for sealing the top or said blank mold while said suction head is in engagement therewith, including a. plunger tip floatably mounted within said suction head, and means responsive to the operation of said valve for forcing said plunger tip into contact with said i =1 mold when said head is connected to the source of suction.

12 A glass shaping machine of the press and blow type comprising a table mounted for rotation around a stationary central column, a plurality of blank molds pivotally mounted on said table, a plurality of neck molds carried by said table and adapted to move around said column in an inner circular path on rotation of said table, a plurality of vertically movable suction, heads carried by said table and adapted to move in an outer circular path around said column, means for swing- .ing said blank molds about their pivots in a horizontal plane so that at times each successive mold is moving in the outer path beneath and in registry with a suction head and at other times each" saidmold is moving in the inner pathbeneath andin registry with a neck mold, means for moving each said-suction head vertically into contact with the mold traveling in the outer path and to press the saine downwardly into a forehearth to gather a charge therein by suction while such mold is .moving continuously in an upright position, and ineans associated with each neck ring mold and adapted to pass therethrough for pressing the charge of glass in the blank mold positioned thereunder.

13. A glass shaping machine comprising a table mounted for rotation around a central column, a series of arms pivotally mounted on said table, a partible blank mold carried by each said arm, means for opening and closing each said blank mold, means for swinging each said arm in a horizontal path about its pivot so that at times the mold carried; thereby is moving in an outer path and at other times in an inner path, means for pressing the molds traveling in said outer path downwardly into a forehearth to gather a charge therein including a plurality of suction heads carried by said table, one for each mold, and adapted to move always in a path above the outer 0 path of the molds, means for raising and lowering the suction heads into and out of engagement with said molds, and means for pressing the charge in said molds while such molds are traveling in the inner path.

14. A glass shaping machine comprising a table mounted for rotation around a central column, a series of blank molds pivotally mounted on said table, means for opening and closing each said mold, means for swinging each said closed mold 0 in a horizontal plane about its pivot so that at times the closed molds are moving in an outer path and at others they are moving in an inner path, a series of neck molds carried by said table and adapted to rotate continuously above the inner path of'travel'of said blank molds, means operable while said blank molds are traveling in the outer path for pressing the same downwardly into a forehearth and gathering a charge of molten glass therein, andmeans operable while said molds are traveling in the inner path for pressing the charge of molten glass in said molds.

' 15. A glass shaping machine comprising a r0- tatable frame, a plurality of molds pivotally mounted on said frame, means for opening and closing said blank molds, means operable when said molds are closed for swinging said molds in a horizontal plane about their pivots whereby at times each said closed mold is moving in an outer path and at other times in an inner path, a plurality of suction heads, one for each mold,

carried by said frame and movable in a circular path above the outerpath of travel of said molds, means for raising and lowering said heads to move them into and out of engagement with the molds traveling said outer path to dip said molds into a forehearth and gather a charge therein, a I spigot on each head adapted to register with a recess formed in the upper end of the mold and means operable when said molds are traveling in the inner path for pressing the charges gathered therein.

16. Aglass shaping machine comprising a table rotatable around a central column, a series of arms pivoted to said table, a mold carried by each said arm, means for swing ng each of said arms about its pivot to move the mold carried thereby between inner and outer paths during the rota-' tion of said table, means for yieldably mounting each of said molds on its respective arm including a vertically movable sleeve carrying said mold, a lever pivoted to said arm and having one end connected to said sleeve, a spring for resisting turning-movement of said lever, and means for pressing the moldstraveling the outer path downwardly into a forehearth and connecting the interiors thereof to a source of suction, including a plurality of suction heads, one for each mold. mounted on said table, and moving continuously in a 'path corresponding to the outer path of said molds, and means for moving said suction heads into and out of engagement with their respective molds and to move such mold downwardly and turn -said lever in opposition to said spring, said spring acting to return the mold to its initial position after such suction head is raised;

17. In a machine for forming hollow glass articles, the combination of a table mounted for rotation, a plurality of blank molds pivoted to said table, means for dipping said molds successively into a path of moltenglass and connectiong each said mold to a source of suction to draw a charge of molten glass thereinto, a plurality of neck ring molds carried by said table, means for effecting a severance of the glass stringing from said blankmolds and for closing the lower ends thereof, means for swinging each of the charged molds about its pivot to a position underneath a neck ring mold, a series of mold supporting members pivoted to said frame, means associated with each said blank mold for moving a supporting member into mold supporting position as said blank mold is moved to a position beneath a neck ring mold, and means for pressing the charges in said blank molds and for'forcing the glass therein into the cooperating neck ring moldsi THOMAS COURTNEY MOORSHEAD.

CERTIFICATE OF CORRECTION- Patent No. 2,081 ,895. I May 25, 1937.

THOMAS COURTNEY MOORSHEAD.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 6, second column, line 4'7, claim 17, for the Word "path" readbath and. for "oonnectiong" read connecting; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 27th day of July, A. D. 1957.

Henry Van Arsdale (Seal) Acting Commissioner of Patents. 

